PATAGONIAN EXPEDITIONS : PALEONTOLOGY. 



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I a. 



Fig. 



2. 



Fig. 



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EXPLANATION OF PLATE XX. 



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Fig. I. Theosodon gracilis?: Right upper teeth, external side, X \- (No. 



15,798. /-, last premolar ; ;;«-§, last molar.) 

 " " The same, crown view, X i- • • • 151 



Theosodon garrettorum, type : Right femur, anterior side, X i- 



(No. 15,164.) 136 



Theosodon lallemanti : Right femur, posterior side of distal por- 

 tion, X 2- (No. 15,216. pi', pit for 

 plantaris muscle.) . . . . 136 



Fig. 3«. " " The same, distal end, X 2- 



Fig. 4. Theosodon gracilis?: Right patella, anterior face, X 2"- (No. 15,798.) 137 



Fig. 5. Theosodon garrettorum, type: Right tibia, anterior side, Xi- (No. 



15,164.) ..... 137 



Fig. 5«. " " " The same, distal end, X -k- 



Fig. 6. Theosodon lydekkeri : Distal half of left fibula, external side, X ■§•• 



(A. M. N. H., No. 9269.) ... 138 

 Fig. 6a!. " " The same, distal end, X i- 



Fig. 7. " " Left pes, dorsal side, a little less than one- 



half natural size. (A. M. N. H., No. 9269.) 

 The calcaneum, astragalus and navicular 

 supplied from other individuals . . 1 38 

 Fig. 8. Theosodon gracilis?: Right tarsus, internal side, X i- (No. 15,- 



798. N', plantar hook of navicular ; Cn. /, 

 entocuneiform ; Cw. j", ectocuneiform.) . 138 

 Fig. 9. Theosodon sp.: Right astragalus, plantar side, X i- (No. 15,717. 



C, external facet for calcaneum ; C", sustentacu- 

 lar facet.) . . . . . . . . 139 



All figures, except Figs. 6, 6a and 7, one-half natural size. 



(vol. vn.) 



